EP 0167865 A3 19880330 - DRIVING CIRCUIT FOR LIQUID CRYSTAL DISPLAY
Title (en)
DRIVING CIRCUIT FOR LIQUID CRYSTAL DISPLAY
Publication
Application
Priority
JP 11990484 A 19840613
Abstract (en)
[origin: EP0167865A2] In a circuit (1, 6, 12, 13, 21) for driving a liquid crystal display element, during a latter half part of an indication renewal period a common electrode is supplied with lower maximum and higher minimum voltages than the maximum and minimum voltages supplied during a first half part of the indication renewal period, in order to enhance response speed of the liquid crystal display element (5).
IPC 1-7
IPC 8 full level
G01D 7/00 (2006.01); G01R 13/40 (2006.01); G02F 1/133 (2006.01); G09G 3/36 (2006.01)
CPC (source: EP KR US)
G01D 7/00 (2013.01 - KR); G01R 13/403 (2013.01 - EP US); G01R 13/407 (2013.01 - EP US); G02F 1/133 (2013.01 - KR)
Citation (search report)
- [A] US 3902169 A 19750826 - WASHIZUKA ISAMU
- [A] EP 0087232 A2 19830831 - SECR DEFENCE BRIT [GB]
- [A] US 4045791 A 19770830 - FUKAI MASAKAZU, et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0167865 A2 19860115; EP 0167865 A3 19880330; EP 0167865 B1 19910508; DE 3582756 D1 19910613; JP S60263995 A 19851227; KR 860000540 A 19860129; KR 930010455 B1 19931025; US 4676602 A 19870630
DOCDB simple family (application)
EP 85107259 A 19850612; DE 3582756 T 19850612; JP 11990484 A 19840613; KR 850004075 A 19850610; US 74278485 A 19850610